/**
 *  Copyright 2007-2008 University Of Southern California
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package edu.isi.pegasus.planner.selector.transformation;

import edu.isi.pegasus.planner.selector.TransformationSelector;

import edu.isi.pegasus.planner.catalog.transformation.TransformationCatalogEntry;
import edu.isi.pegasus.planner.catalog.transformation.classes.TCType;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * This implementation of the Selector select a transformation of type STAGEABLE on all sites.
 *
 * @author Gaurang Mehta
 * @version $Revision: 2638 $
 */
public class Staged
    extends TransformationSelector {

    /**
     * Takes a list of TransformationCatalogEntry objects and returns 1 or
     * many TransformationCatalogEntry objects as a list  by selecting only Static stageable binary's
     *
     * @param tcentries List
     * @return List
     */
    public List getTCEntry( List tcentries ) {
        List results = null;
        for ( Iterator i = tcentries.iterator(); i.hasNext(); ) {
            TransformationCatalogEntry tc = ( TransformationCatalogEntry ) i.
                next();
            if ( tc.getType().equals( TCType.STAGEABLE ) ) {
                if ( results == null ) {
                    results = new ArrayList( 5 );
                }
                results.add( tc );
            }
        }
        return results;
    }
}
